Cartridge for an electronic pen



FIG. 1 is a front-bottom-right perspective view of a cartridge for an electronic pen according to our new design;

FIG. 2 is a rear-top-left perspective view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof;

FIG. 7 is top plan view thereof;

FIG. 8 is a bottom plan view thereof; and,

FIG. 9 is a partial a rear-top-left perspective view elevational view thereof, as indicated by the view indicator shown in FIG. 2 .

The broken lines in the figures depict portions of the cartridge for an electronic pen that form no part of the claimed design. 

CLAIM The ornamental design for a cartridge for an electronic pen, as shown and described. 